Software Engineer, Generative AI

Liftoff is a leading AI-powered performance marketing platform for the mobile app economy. Our end-to-end technology stack helps app marketers acquire and retain high-value users, while enabling publishers to maximize revenue across programmatic and direct demand.

Liftoff’s solutions, including Accelerate, Direct, Monetize, Intelligence, and Vungle Exchange, support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance, ecommerce, and entertainment. Founded in 2012 and headquartered in Redwood City, CA, Liftoff has a diverse, global presence.

Design, develop, and implement novel generative AI solutions to address mission critical challenges across various departments and products. Collaborate with cross-functional teams to identify opportunities for applying AI in operations and creative workflows. Continuously evaluate and improve the performance, reliability, and scalability of Gen AI models in production. Develop methodology for benchmarking and evaluation to track and maximize model performance. Stay at the forefront of AI technology, ensuring that our solutions are innovative, efficient, and impactful. Collaborate on projects, demonstrating technical leadership and building cross-team relationships to deliver on objectives. Use strong communication skills (written and verbal) to mentor and guide junior engineers, fostering an environment of growth and innovation. Up to 10% domestic travel required to CA office. Telecommuting is permitted. Employee may request to work from any city & county in the following states: CA, CO, ID, IL, GA, MA, MO, MN, NJ, NV, NY, OR, RI, TX, UT, WA. Salary: $265,000 to $400,000 per year.

MINIMUM REQUIREMENTS: Bachelor’s degree or U.S. equivalent in Computer Science, Computer Engineering, or a related field, plus 5 years of professional experience as Software Engineer, Senior Software Engineer, or any occupation/position/job title designing and implementing Artificial Intelligence or Machine Learning solutions.

Must also have experience in the following: 5 years of professional experience utilizing Python and one of the following: Node.js, React, or JavaScript; 4 years of professional experience deploying and scaling products at high-growth businesses; 2 years of professional experience designing, refining, and optimizing prompts for large language models, generative AI, and Machine Learning (ML) infrastructure; 1 year of professional experience designing and implementing evaluation frameworks, monitoring systems, and dashboards to assess model performance; 1 year of professional experience utilizing Gen AI technologies and developing human feedback systems for generative AI that include data collection interfaces, synthetic data generation, and production data (including probabilistic output handling, prompt engineering, or evaluation strategies); 1 year of professional experience implementing and refining Retrieval-Augmented Generation (RAG) systems, including optimizing embedding models, text chunking, and vector storage.

CONTACT: Please apply online at:

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Liftoff offers a fast-paced, collaborative, and innovative work environment where employees are empowered to grow and make an impact. We’re shaping the future of the mobile app ecosystem—join us and help accelerate what’s next.

Liftoff’s compensation strategy includes competitive salaries, equity, and benefits designed to support employee well-being and performance. We benchmark compensation based on role, level, and location to ensure fairness and market alignment. Benefits may include medical coverage, wellness stipends, and additional perks based on your country of residence.

Liftoff is an equal opportunity employer. We are committed to creating an inclusive environment for all employees and applicants regardless of race, ethnicity, national origin, age, marital status, disability, sexual orientation, gender identity, religion, veteran status, or any other characteristic protected by applicable law.

Agency and Third Party Recruiter Notice:

Liftoff does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or Recruiting Team. All candidates must be submitted via our Applicant Tracking System by approved Liftoff vendors who have been expressly requested to make a submission by our Recruiting Team for a specific job opening. No placement fees will be paid to any firm unless such a request has been made by the Liftoff Recruiting Team and such a candidate was submitted to the Liftoff Recruiting Team via our Applicant Tracking System.